Sheikh Mohammed has vowed his Godolphin operation will go from "strength to strength" after ordering a decree banning the use of anabolic steroids in Dubai.

The ruler of Dubai has moved to prohibit the use of the performance-enhancing drugs following the British Horseracing Authority's decision to ban former Godolphin trainer Mahmood Al Zarooni for eight years after he admitted administering the substances to several horses in his care.

Anabolic steroids were allowed to be used on horses not in training in Dubai but from now on, anyone found using, selling or buying any performance-enhancing drugs in the United Arab Emirates for equine purposes will be breaking the new law.

"I have always believed in the integrity of horse racing and all other horse sports," Sheikh Mohammed told

"I have, in light of the unfortunate recent event, directed that a decree be issued making, with immediate effect, the import, sale, purchase or use of anabolic steroids in horse sports a criminal offence under the UAE penal laws.

"Regrettably, one of my stables in Europe has recently fallen below the standards that I expect and will tolerate.

"As soon as the internal investigations are complete and the requisite pre-emptory rules are put in place, Godolphin will go from strength to strength and lead, once again, adherence to the highest standards in that gracious sport."